QUESTION 11 Which is true of the structure the DNA double helix? A. The sugar-phosphate backbone...
QUESTION 11
-
Which is true of the structure the DNA double helix?
A. The sugar-phosphate backbone faces outward.
B. The nitrogen-containing bases face inward and form hydrogen bonds to one another.
C. Adenine (A) bonds to Thymine (T).
D. Adenine (A) bonds the Cytosine (C).
Homework Answers
ANSWER FOR QUESTION 11
OPTION A, B and C
Explanation:
a. True, Phosphate sugar back bone of a double helix faces outward. Also minor and major grooves between phosphate- sugar bond is present in the helix.
b. True, Nitrogen containing bases faces inward on the ladder and other side the formation of hydrogen bonds to pair the DNA nucleotides takes place (complementary base pairing).
c. True, In DNA double helix Adenine (A) always bonds to Thymine (T) and this is called complementary base pairing.
d. False, Guanine (G) always bonds fo cytosine (C) and Adenine (A) always bonds to Thymine (T) and this is called complementary base pairing.
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QUESTION 11
Which is true of the structure the DNA double
helix?
A.
The sugar-phosphate backbone...
Complete the sentences to describe the structure of DNA. Labels may be used more than once...
Complete the sentences to describe the structure of DNA. Labels may be used more than once hydrogen bonds DNA is referred to as a strands that are , meaning that it has covalent bonds together. antiparallel ribose sugar double helix deoxvribose The strands together through of DNA form the rungs, linking the The backbone of DNA is comprised of sugar and a The strands are oriented in , meaning they are but are guanine thymine phosphate group similar directions Adenine...
Adenine 0-P=0 Thymine Lo O=r-o Sugar-phosphate backbone Sugar-phosphate backbone Cytosine O-P=0 Guanine 0 NH O=P-O 0--...
Adenine 0-P=0 Thymine Lo O=r-o Sugar-phosphate backbone Sugar-phosphate backbone Cytosine O-P=0 Guanine 0 NH O=P-O 0-- Nitrogenous bases Where are the hydrogen bonds found in this DNA molecule? between C and H in the nucleotide cytosine between H in cytosine and O in guanine between N and H in the nucleotide containing guanine between H in guanine and N in cytosine
Art-Labeling Activity: Structure of the nucleic acids DNA and RNA Reset Double-helical DNA Sugar-phosphate backbone (RNA)...
Art-Labeling Activity: Structure of the nucleic acids DNA and RNA Reset Double-helical DNA Sugar-phosphate backbone (RNA) Hydrogen bonds Complementary base pairing Phosphate group Deoxyribose Single-stranded RNA Sugar-phosphate backbone (DNA) Base uracil in place of thymine OR AO
Select the phrases that accurately describe properties of the most common form of the DNA double helix
Select the phrases that accurately describe properties of the most common form of the DNA double helix. There is more than one correct answer. Select all that apply. DNA contains equal amounts of adenine and thymine, and equal amounts of cytosine and guanine. A helical turn consists of about 10 nucleotides. Base pairs have a spacing of 20 A. The phosphodiester bonds between nucleotide residues run in opposite directions in the two strands. The nitrogenous bases are exposed to the solvent, whereas the sugar-phosphate backbone of...
4. Which of the following statements best describes why the sugar phosphate nucleic acid backbone is...
4. Which of the following statements best describes why the sugar phosphate nucleic acid backbone is on the outer part of the DNA double helix while the nitrogen bases are on the inside of the double helix? A) The sugar phosphate backbone is hydrophilic while the bases are hydrophobic. B) The sugar phosphate backbone is hydrophobic while the bases are hydrophilic. C) The sugar phosphate backbones of the two strands are bonded together. D) The nitrogen bases are covalently bonded...
Each of the following statements about the structure of DNA may be either true or false....
Each of the following statements about the structure of DNA may be either true or false. Choose the appropriate answer for each of these statements. Bonding between adenine and thymine on opposite strands involves two hydrogen bonds. Nitrogenous bases are located on the outside of the double helix: phosphates are located towards the middle of the double helix. Bonding between guanine and cytosine on opposite strands involves three hydrogen bonds. DNA and RNA are structurally different due to the difference...
2) Draw the two base-pairs, A-T and G-C, depicting the nitrogen-containing bases attached to the deoxyribose-phosphate...
2) Draw the two base-pairs, A-T and G-C, depicting the nitrogen-containing bases attached to the deoxyribose-phosphate backbone of DNA. Include the hydrogen bonding sites. (Hint: Look at Figure 12.7, Chemistry in Context 7h Edition). A-T base-pairing (show the Hydrogen bonding): G-C base-pairing (show the Hydrogen bonding): 101 Oy. The process CH3 thymine 0----H-N HC adenine N- To deoxyribose and DNA chain To deoxyribose and DNA chain N -H cytosine HC-C guanine HC N To deoxyribose and DNA chain To deoxyribose...
It was Rosalind Franklin that helped Watson and Crick realize that the sugar-phosphate backbone of DNA...
It was Rosalind Franklin that helped Watson and Crick realize that the sugar-phosphate backbone of DNA would be facing outwardly and the nitrogen bases would be facing inwardly in the double helix. What properties of these molecules made her so sure of that?
In the DNA double helix, 2 strands of DNA are joined together through the hydrogen bonding...
In the DNA double helix, 2 strands of DNA are joined together through the hydrogen bonding of the individual base pairs. The base Guanine bonds to which other base. Answers: a. uracil b. cytosine c. thymine d. adenine
Exercise 23.6 The two sides of the DNA double helix are connected by pairs of bases...
Exercise 23.6 The two sides of the DNA double helix are connected by pairs of bases (adenine, thymine, cytosine, and guanine). Because of the geometric shape of these molecules, adenine bonds with thymine and cytosine bonds with guanine. The figure shows the thymine- adenine bond. Each charge shown is te and the H N distance is 0.110 nm. (Figure 1) Figure 1 of 1 > k 0.280 Onm Thymine Adenine k 0300 N) Part B Compare this energy with the...
Complete the sentences to describe the structure of DNA. Labels may be used more than once hydrogen bonds DNA is referred to as a strands that are , meaning that it has covalent bonds together. antiparallel ribose sugar double helix deoxvribose The strands together through of DNA form the rungs, linking the The backbone of DNA is comprised of sugar and a The strands are oriented in , meaning they are but are guanine thymine phosphate group similar directions Adenine...
Adenine 0-P=0 Thymine Lo O=r-o Sugar-phosphate backbone Sugar-phosphate backbone Cytosine O-P=0 Guanine 0 NH O=P-O 0-- Nitrogenous bases Where are the hydrogen bonds found in this DNA molecule? between C and H in the nucleotide cytosine between H in cytosine and O in guanine between N and H in the nucleotide containing guanine between H in guanine and N in cytosine
Art-Labeling Activity: Structure of the nucleic acids DNA and RNA Reset Double-helical DNA Sugar-phosphate backbone (RNA) Hydrogen bonds Complementary base pairing Phosphate group Deoxyribose Single-stranded RNA Sugar-phosphate backbone (DNA) Base uracil in place of thymine OR AO
4. Which of the following statements best describes why the sugar phosphate nucleic acid backbone is on the outer part of the DNA double helix while the nitrogen bases are on the inside of the double helix? A) The sugar phosphate backbone is hydrophilic while the bases are hydrophobic. B) The sugar phosphate backbone is hydrophobic while the bases are hydrophilic. C) The sugar phosphate backbones of the two strands are bonded together. D) The nitrogen bases are covalently bonded...
Each of the following statements about the structure of DNA may be either true or false. Choose the appropriate answer for each of these statements. Bonding between adenine and thymine on opposite strands involves two hydrogen bonds. Nitrogenous bases are located on the outside of the double helix: phosphates are located towards the middle of the double helix. Bonding between guanine and cytosine on opposite strands involves three hydrogen bonds. DNA and RNA are structurally different due to the difference...
2) Draw the two base-pairs, A-T and G-C, depicting the nitrogen-containing bases attached to the deoxyribose-phosphate backbone of DNA. Include the hydrogen bonding sites. (Hint: Look at Figure 12.7, Chemistry in Context 7h Edition). A-T base-pairing (show the Hydrogen bonding): G-C base-pairing (show the Hydrogen bonding): 101 Oy. The process CH3 thymine 0----H-N HC adenine N- To deoxyribose and DNA chain To deoxyribose and DNA chain N -H cytosine HC-C guanine HC N To deoxyribose and DNA chain To deoxyribose...
Exercise 23.6 The two sides of the DNA double helix are connected by pairs of bases (adenine, thymine, cytosine, and guanine). Because of the geometric shape of these molecules, adenine bonds with thymine and cytosine bonds with guanine. The figure shows the thymine- adenine bond. Each charge shown is te and the H N distance is 0.110 nm. (Figure 1) Figure 1 of 1 > k 0.280 Onm Thymine Adenine k 0300 N) Part B Compare this energy with the...
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